1) Insufficient structural bearing capacity due to load changes, overtime service, changes in specifications and procedures;
2) The deformation, distortion, disability, depression, etc. of the component due to various accidents cause the section of the member to be weakened, the member to warp, the connection to crack, etc.;
3) causing deformation or cracking of the member or joint under temperature difference;
4) Corrosion due to chemical attack and electrochemical corrosion cause the cross-section of Harbin steel structural members to be weakened;
5) Others include errors in design, production, construction, and illegal use and operation during the service period.
There are three main technical measures for reinforcement of Harbin steel structure:
1) Cross-section reinforcement method: reinforcing the steel in part or along the entire length of the member, and connecting them together to force them together;
2) Change the calculation sketch: add additional support, adjust the load distribution, reduce the internal force level, force the displacement of the statically indeterminate structure support, and reduce the stress peak;
3) Prestressed cable method: Use high-strength cable to strengthen the structural weak link or improve the overall bearing capacity, stiffness and stability of the structure.
For more exciting content, please visit Heilongjiang Zhongjie Steel Structure Engineering Co., Ltd.**
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Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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